Mechanical heating by active galaxies

Details Mechanical heating by active galaxies Mechanical heating by active galaxies

2004-03-04

arxiv.org/abs/astro-ph/0403128v1

Phil.Trans.Roy.Soc.Lond. A363 (2005) 655-665

Astronomy and Astrophysics

Astrophysics

10 pages, no figures. Submitted to Philosophical Transactions of the Royal Society (Series A: Mathematical, Physical and Engin

Scientific paper

10.1098/rsta.2004.1518

Jets and winds are significant channels for energy loss from accreting black holes. These outflows mechanically heat their surroundings, through shocks as well as gentler forms of heating. We discuss recent efforts to understand the nature and distribution of mechanical heating by central AGNs in clusters of galaxies, using numerical simulations and analytic models. Specifically, we will discuss whether the relatively gentle `effervescent heating' mechanism can compensate for radiative losses in the central regions of clusters, and account for the excess entropy observed at larger radii.

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